Chaparral Middle
1405 South Spruce Tree Dr., Diamond Bar, CA 91765 Map
Math (met standard)
81%
+44
state 37% · 2025-26
English (met standard)
81%
+32
state 49% · 2025-26
Science (met standard)
70%
+34
state 35% · 2025-26
Low income
25%
free or reduced-price lunch
Students
1,349
2024-25
Students per teacher
28.3
2024-25
Test score trends
Share of students who met or exceeded the state standard each year.
Latest results by grade
| Grade | Math | English | Science |
|---|---|---|---|
| Grade 6 | 78% state 37% · 2025-26 | 78% state 48% · 2025-26 | — |
| Grade 7 | 82% state 38% · 2025-26 | 83% state 51% · 2025-26 | — |
| Grade 8 | 83% state 36% · 2025-26 | 84% state 50% · 2025-26 | 70% state 35% · 2025-26 |
| All grades | 81% state 37% · 2025-26 | 81% state 49% · 2025-26 | 70% state 35% · 2025-26 |
Results by year (all grades)
| School year | Math | English | Science |
|---|---|---|---|
| 2025-26 | 81% state 37% | 81% state 49% | 70% state 35% |
| 2024-25 | 80% state 36% | 83% state 49% | 66% state 32% |
| 2023-24 | 79% state 33% | 82% state 46% | 62% state 29% |
| 2022-23 | 74% state 32% | 81% state 46% | 64% state 29% |
| 2021-22 | 74% state 31% | 80% state 47% | 65% state 29% |
| 2018-19 | 78% state 38% | 78% state 50% | 64% state 31% |
| 2017-18 | 77% state 37% | 80% state 49% | — |
| 2016-17 | 75% state 37% | 79% state 48% | — |
| 2015-16 | 70% state 36% | 77% state 48% | — |
| 2014-15 | 66% state 33% | 75% state 44% | — |
Students
Race and ethnicity, 2024-25
- Asian 77%
- White 4%
- Hispanic 14%
- Black 1%
- Two or more 3%
- Other 0%
Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).
Nearby schools
2025-26 results
Subject percentages show the share of students who met or exceeded the state standard.
| Pick to compare | |||||
|---|---|---|---|---|---|
|
Lorbeer Middle
Grades 7–8
· Pomona Unified
|
1.6 mi |
33%
−4
vs state
|
51%
+1
vs state
|
74% | |
|
Armstrong Elementary
Grades K–6
· Pomona Unified
|
1.8 mi |
26%
−15
vs state
|
45%
−1
vs state
|
67% | |
|
South Pointe Middle
Grades 6–8
· Walnut Valley Unified
|
1.8 mi |
80%
+43
vs state
|
79%
+30
vs state
|
25% | |
|
Pantera Elementary
Grades K–6
· Pomona Unified
|
1.9 mi |
81%
+40
vs state
|
82%
+36
vs state
|
48% | |
|
Golden Springs Elementary
Grades K–6
· Pomona Unified
|
2.3 mi |
42%
+1
vs state
|
57%
+10
vs state
|
72% | |
|
Suzanne Middle
Grades 6–8
· Walnut Valley Unified
|
2.8 mi |
65%
+28
vs state
|
74%
+25
vs state
|
25% | |
|
Ybarra Academy for the Arts and Technology
Grades K–8
· Rowland Unified
|
3.1 mi |
44%
+5
vs state
|
60%
+12
vs state
|
67% | |
|
Ranch Hills Elementary
Grades K–6
· Pomona Unified
|
3.4 mi |
47%
+6
vs state
|
57%
+10
vs state
|
63% | |
|
Shelyn Elementary
Grades K–6
· Rowland Unified
|
3.4 mi |
68%
+27
vs state
|
71%
+24
vs state
|
64% | |
|
Hollingworth Elementary
Grades K–6
· Rowland Unified
|
3.6 mi |
28%
−13
vs state
|
37%
−10
vs state
|
73% |
No schools match this filter.